I would say that her treatment of stuffed animals is sign enough. If something unsettles you about a person, much as I don't want to judge, is to be better off not seeking their company.
Ah yes, of course. [His cheese puffs were served though he only paid them a quick glance.]
There are times when it is not 'safety' a person seeks, but answers, [as aptly displayed by a certain Meister before --] and will get to them no matter the cost.
It is important however, that we know of her thereabouts. Would you know any other friends of Saya or tried contacting them, see if they have any idea? I... don't suppose the Peregrine Mendicant can tell us where she is?